The cost of production of a 50 kg bag of cement is rupees 90 and it is sold for rupees 120.the government imposes a tax of 10% of the cost of production.it the government changes its policy and levies the 10% tax on the s.p. instead of c.p,by what percent does the profit decrease(assuming the s.p is unchanged)?pl. provide sol.

1) 14 2/7%
2) 500/297%
3) 1/7%
4) 5/297%